Calculating-machine.



No. 893,727. PATE-NTED JULY 2.1, 1908.

' H. B. GOLDBERG.

CALCULATING MACHINE.

APPLICATION II-I-ED MAY 28,1906.

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@auwmo N0. 893.727. PATENTBD JULY 21, 1908.

H. E. GOLDBERG. I

} CALCULATING MACHINE.

APPLICATION FILED MAY 23,1906.

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11. E. GOLDBERG. CALCULATING MACHINE.

'APPLIOATION FILED MAY 28,1906.

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HYMAN ELI GOLDBERG,

OF CHICAGO, ILLINOIS, ASSIGNOR 'IO GOLDBERG CALCULATING MACHINE COMPANY, A CORPORATION OF ILLINOIS.

CALCULATING-MACHINE Specification of Letters Patent.

Patented July 21, 1908.

Application filed May 28, 12 306. Serial 1%. 3l9,105.

To all whom it may concern:

Be it known that I, HYMAN'ELI GoLD- BERG, a citizen of the United States, residing chines including calculating typewriter at-' tachmcnts, and its object is to provide a safeguard against incorrect operation on the part of the operator. In printing numbers .hav ing three figures it common to punctuate or point off by dividing the figures into grou s of three and printing a comma or peor, what practically amounts to the same t. ing, to leave a space between each group, such space in typewriting being equal to a regular letter or figure space.

' nod or space also occurs between the dimes column and the units dollars column. To illustrate, the most common practice is to write a number thus: $4,382,967.22 or thus $4382 967 22. In either method when using the machines now in most general use there is a possibility that the operator may inadvertently omit the comma or space and print a figure there instead; or, if the machine is a non recording one, strike a key under such conditions that the value thereof would not be registered, or if registered would occur in the wrong ordinal or columnanplacef As above indicated the object of this invention is to prevent such error on the part of the. oper-' ator and briefly stated, this object is accomplished by providing means for preventing the depression of the keys at the spacing or pointing-ori points. y

I accomplish my objects by the mechanism illustrated in the accompanying drawings in which:

Figure 1 is a general front elevation of a calculating typewriter attachment embodying the invention. Fig. 2 is a'sectional elevation through the typewriter and totalizer, showing the interlocked connections between the keys and the receiving wheels. Fig. 3 is a front view of a totalizer embodying my invention, the cover or casing being removed to expose the operative parts. Fig. 4 is a sectional view. through the figure wheels showing the manner of grouping or spacing the same. The section is taken, for example, on the line 4-4 Fig. 6. Fig. 5 is a secn printing dollars and cents a petional elevation taken transversely through the totalizer. Fig.6 is similar to Fig. 5, are cept that a different mechanism is shown for preventing the rotation of the mastenwheel at the pointing-off point.

The totalizer here shown is in many rev speets ide tic al with the totalizer shown and described 11 U. S. Patent No. 741,961 issued to me October 20, 1903, the 'main difference being in the grouping of the figure wheels and parts which actuate thesame-and in the adding of a locked piece at each of the pointing-off spaces in the totalizer. The mechanism which drives the totalizer and which. is variously referred-to in the art as the differential, valuating or digitizing mechshown and described in U. S. Patent No. 782,554 issued to me February 14, 1905. isnot essential that the invention be embodied in the totalizer and differential. 1nechanism of the ty e here shown but it is applicable toother' orms so long as the-master- Wheel andreceiving wheels come into mesh seriatim and the differentialmechanism he geared in such manner that when in operative condition the master wheel is held from rotation and the keys cannot be depressed.

Referring first to the totalizer, the same consists of ii urewheels 1, receiving wheels 2, carrying w eels 3, and carrying pinions 4. Wheels 1, 2 and 3 areindependently rotatable on shafts 5, 6 and 7 respectively which. are all supported in the totalizer casing 8. As explained in my prior totalizer atent above referred to each receiving w eel 2 meshes with a carrying wheel 3 and with a gear Wheel 9 1i idly secured to or forming an inte ralpart 0% its figure wheel for rotating it. he carrying pinions 4 engage the car rying wheels 3 in pairs and with them constitute a tens carryin mechanism.

The totalizer and t e master wheel 10 have relative travel so that the receiving wheels shall beenmeshed sertartim, and in the pres. ent form of a typewriter attachment it is the totalizer which travels, it being mounted in this instance on a slide 11 which is made to travel lengthwise along stationary bar 12 by means of an arm 13 extending to said slide from the typewriter carriage 14. Said carriage is supported on the typewriter framework 15 and travels thereon as a result of the depression of the typewriter keys 16 in the well known manner.

amsm is substantially the same as the one teeth of the receiving wheels 2.

In the resent totalizer the figurewheels, instead of being .all equi-distant from each other are arranged in groups, three wheelsto a group, with an intervening space between them equivalent to a letter or figurespace.

The singleexception to this grouping is a I grou of two at the right end of the totalizer vary is to wheel from rotating when opposite to the pointing-off space in the totalizer. In Figs. 2 and 5 this non rotatable member is shown in the form of a piece 17 whichv is mounted upon shaft 6 and is provided with one or more teeth similar to the This piece is prevented from rotating by means of an arm 17 which extends over the shaft 5, or other fixed piece in-the-totalizer and prevents the master wheel from rotating when the two are in juxtaposition. -()ther means may be employed for the purpose, for ex-' ample the piece 17 shown in Fig. 6. Said piece 17* is practically identical with the receiving wheels but a pin 18 extending through its hub 17 and through the shaft 6. Saidshaft in this form is non rotatable and consequently the pieces 17 are non rotatable.

In the form of differential or digitizing or valuating mechanism which I have selected to illustrate this invention, the master wheel 10 is mounted upon. a non traveling shaft 19 and is provided upon one side with the bevel gear 20 mcshin'g with the pinion 21 on shaft 22. Said shaft is driven by means of the pinion meshing'with the bevel gear' 24 ormed upon the side of the'spur gear 25. Said gear 25 mounted upon the shaft 26 and is driven by means of a pinion 27 fixed on the'digit shaft 28. Said digit shaft has rigidly fixed thereon a set of digit pinions adapted to be enmeshed by the teeth 29 formed upon the digit pieces 30 therc'being one of said digit (piecesfor each of the digits from 1 to 9. A git gear wheel 31 is rigidly secured on the side of eachdigit piece for roa driving .sector 32' tating it and there is adapted to mesh with each digit gear wheel 3]. Said driving sectors are all independently rotatable upon the shaft and are non yieldably connected to their respective figure keys 16 by means of the links 34.] It .is obvious from the above description that if the n'nister wheel is r evented from rotating the keys'cannot be diepresscd.

In Operation, the depressionof a key causes the step by step travel of the typewritercarriage and totalizer in the usual There I place manner and also causes the operation of the master wheel, the amount of rotation of the master wheel depending upon which of the keys is struck. If the operator manipulates the machine pro erly and does not attempt to strike a key w ion-the master wheel-is 0pposite to a pointing-off space in the totalizer the presence of the non rotatable members 17 or 17 .will not be felt, for the totalizer will move the non rotatable members past the master wheel without their roducing an effect of any kind. But should attempt to depress a figure key at a ointingoff point, that is, where the action' 0 the type would be to print a figure in one of the pointing-ofi' spaces, his attention will be immediately called'to the fact for he will find thatthe key cannot be' depressed, the master wheel being then in line with a non rotatable member 17. Thus he will be prevented both from registering the digit in the wrong column in the totalizer and in the case of.a recording calculator from printing the digit in the wrong place on the recording sheet.

Although it is logical both from theoretical and structural considerations to select as the non rotatable member" one which is directly engaged'by the master wheel sential reason why some other member in-my form of totalizer may not be employed to act as a locking piece. To illustrate, by reference to Fi s. 5 and 6 it is'apparent that the receivin w eels 2 arealways inmesh both with t e carryin wheels 3 consequently the same locking eect on the master wheel ,would be obtained by inserting dummy figure wheels andlocking them.

In the differential or digitizing mechanism here shown, toothed gear wheels are employed which are reversible, that'is, operate positively in two directions in distinction to ratchet and similar cars which operate positively in only one irection. It will be understood that as far as my present invention is concerned it is not nec'essa that reversible gear wheels be employe A ratchet differential mechanism operating ositively in only one direction would be sufficient to prevent the depression of a key when themaster wheel is held fast, and therefore I do not wish to be understood as limiting myself to reversible gearing ,as shown in the draw-- 1. A calculating-machine having'difierential mechanism, a. totalizer adapted to be engaged by the same to be driven thereby said totalizer having pointing-off intervals therein, and fixed members located in correspond- I ence with said pointing-off intervals in the totalizer, 'said fixed members being adapted to be'engaged by said differential mechanism for holding the same for the purpose described;

the operator,

there is no es{ themingtcr Wbrcl and totalizor \Yltti'PiJy tho A calculating machine having diiieren- Y tial nioohanisni the parts whereof are in posh tivo gear connection So that it one part is hold the others arc in consequence also held; and. 1 a totalizcr adapted to be positively gear-coir nmztcd to said dilt'crcntial mechanism to bo operated thereby, said totalizer having iixcd IHGJ'DhGTS at tho pointing-off points for hold- 5 in; the differential mechanism 'l'ioni. action at such pointing-off points the ditlcrcntial inccl'ianism and totalizcr being ri-elativoiy shiltablc so that the differential lncchanism will engage the ttalizer in the. (lilicrcnt ordinal or columnar plmzcs iZllG-Tfltlf one after the other.

2-). in oalmilating machine, a i.iii.t1ilZ-?T ini tons carrying nwohaniam, 'riwciving; 3

opurating tho inc, and non rotatabla incmi'mrs: :itid. rrcciving Wlwols living in gron is with one oi said. non rota-- table members located bctmronrach group to oogrosp'ornl to the pointing-oil point in the printod nun'iber; in combinaLion with a rims-tor whwl, moans for actruttirigit and means in? producing rolatiw-i rm-'21 iNBtWttil master WllPGl .rnay cngagy-i tho rm-saving \Yi.l((i.t-'- and il'll'i l'p mfll non rotz-i-tablo mono l)( successively.

i. in a calculating ll'l'flifll iilk", a totalizvr in--- minding tons; carrying n10. HLUiSilI. rot-wiring whii cla for (JPOI'iLtlJlg' the same, and non ro tabla in'mnbcrs; said. rg-iociving whcvlri be .1 arranged in groups with one of said non rota table nmmbors located between ouch group to correspond to the pointing oil point in ti printed number; in combination with a i'nas ter WlRLEh l'ncans for actuating it and means for producing relative travel bctweon tho master Whecl and totalizer whereby tho inastor when may engage the receiving Winxeln and int massively and means for .rni'iving'tlie ref-calving l wheels and. non rotatzitl'ilo mon'iber snacca4- l sivcly past the master Wheel.

5. in a calculating machine, a totalizerineluding tons carrying mechanism, receiving 3 who for operating the same, and non rotaprintod nuinbcr; "in. combin tor W hccl, figure keys, p

tablo members; said receivi'n wheels' being v arranged in groups with one of said non rotatable n'iernbers located between each group to correspond to tho pointing-0H point in the tivc gear connectionabctweon aaid k: .5 and said mast-er whorl, Wlioreby the holding of the master whocl prevents the depression of said keys,

said master wl'wol, keys and intermediate (:UI'HIQGi-lojlS constituting a dillcrcnt-ial mechanism; and means for producing relative travel between the master wheel and totalizcr wl'iercl'iy the {(135.6 vi-"heel may engage thev rocciving n'l'ir-ruls interposed. non r0- taiable. mcmigw sum xi-iv.

it in (filil'll iillht i'rll, any operated t}"1)* writor having a at itionary frame and a carriago i.ra\'i' i.in tlicroon; a non travs ling'maa Q grit-[0d, Logc nor; totalizor traveling 111 nm with rlfl-ll'l riago, said. totalizer .'i.n (';lud inn tons tarrying l!1'*}ii""i-ill and receiving for operating tin. time there being a room -'1n wheel. for each of the-actual ordinal pianos in the totalizcr but said receiving Will-Bis bing. arranged in groups which are aparatod at the pointing-off points by a spaoc cquivalent to a letter or figure space in f the printed sheet; and a non rotatable mem- I bcl located betwci-in each group oi "'ecclvmg \VllGPlS, the receiving Wheels and non rotatahlo members bein so located with reference to each other a d the rnastor wheelthat tbcy are. brongl'lt into operativa iino with the. master wheel successively the keys being therefore lockcd at the pointing-01f points of the totaiizcr.

rave hereunto sub non of two w1t- H Ii. .tfi A N i231 .JiOLDBlERG,

ation witha mas 

